I have the API Reef master test kit as well as an API pH test kit, when I do my pH test it comes back darker than the 7.6 on my card. Can I buy a high pH color card and use the test solution i have or is there a different test solution/card combo i need to purchase?
55 Gallon DT, 30 Gallon Sump, Dual DIY PVC Overflow, Tunze Protein Skimmer, Jier JR 400 Gph return pump, 4 bulb T5HO w/ Night LEDs, 2x 850gph Koralia
55 Gallon DT, 30 Gallon Sump, Dual DIY PVC Overflow, Tunze Protein Skimmer, Jier JR 400 Gph return pump, 4 bulb T5HO w/ Night LEDs, 2x 850gph Koralia